extensions/renderer/resources/storage_area.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 var normalizeArgumentsAndValidate =
   6     require('schemaUtils').normalizeArgumentsAndValidate
   7 var sendRequest = require('sendRequest').sendRequest;
   8
   9 function extendSchema(schema) {
  10   var extendedSchema = $Array.slice(schema);
  11   extendedSchema.unshift({'type': 'string'});
  12   return extendedSchema;
  13 }
  14
  15 function StorageArea(namespace, schema) {
  16   // Binds an API function for a namespace to its browser-side call, e.g.
  17   // storage.sync.get('foo') -> (binds to) ->
  18   // storage.get('sync', 'foo').
  19   //
  20   // TODO(kalman): Put as a method on CustombindingObject and re-use (or
  21   // even generate) for other APIs that need to do this. Same for other
  22   // callers of registerCustomType().
  23   var self = this;
  24   function bindApiFunction(functionName) {
  25     self[functionName] = function() {
  26       var funSchema = this.functionSchemas[functionName];
  27       var args = $Array.slice(arguments);
  28       args = normalizeArgumentsAndValidate(args, funSchema);
  29       return sendRequest(
  30           'storage.' + functionName,
  31           $Array.concat([namespace], args),
  32           extendSchema(funSchema.definition.parameters),
  33           {preserveNullInObjects: true});
  34     };
  35   }
  36   var apiFunctions = ['get', 'set', 'remove', 'clear', 'getBytesInUse'];
  37   $Array.forEach(apiFunctions, bindApiFunction);
  38 }
  39
  40 exports.StorageArea = StorageArea;